What does the airbag, used for safety of car driver, contain?

• Sodium bicarbonate
• Sodium azide
• Sodium nitrite
• Sodium peroxide
Correct Option: B  [ Sodium azide ]

Remark:

Metals can be beaten into sheets, because:

• they are ductile
• they are soft
• they are malleable
• the metal particles are loosely arranged
Correct Option: C  [ they are malleable ]

Remark:

Under critical temperature, on compressing gases turn to liquid, because:

• molecules are of finite size.
• molecules have random motion.
• molecules have inter-molecular forces.
• molecules are spherical.
Correct Option: C  [ molecules have inter-molecular forces. ]

Remark:

A fan produces a feeling of comfort during hot weather because:

• fan supplies cool air
• our body radiates more heat in air
• conductivity of air increases
• our perspiration evaporates rapidly
Correct Option: D  [ our perspiration evaporates rapidly ]

Remark:

Ozone hole refers to :

• hole in Ozone layer
• decrease in the Ozone layer
• decrease in thickness of Ozone layer
• increase in thickness of Ozone layer
Correct Option: C  [ decrease in thickness of Ozone layer ]

Remark:

Plasma membrane in eukaryotic cells is made up of:

• Phospholipid
• Lipoprotein
• Phospholipo-protein
• Phospho-protein
Correct Option: A  [ Phospholipid ]

Remark:

Which of the following retains the information when the power to the system is shut down?

• CPU
• ROM
• RAM
• DIMM
Correct Option: B  [ ROM ]

Remark:

The Law of Segregation and The Law of Independent Assortment were discovered by

• Johann Gregor Mendel
• Thomas Hunt Morgan
• Govindjee
• M. D. Hatch
Correct Option: A  [ Johann Gregor Mendel ]

Remark:

Which cells in our body are popularly called 'soldiers' of the human body?

• Eosinophils
• White blood cells
• Red blood cells
• Basophils
Correct Option: B  [ White blood cells ]

Remark:

dolomite is used in which field?

• Soil conditioner
• Pasteurization
• Dynamite
• Synthetic rubber
Correct Option: A  [ Soil conditioner ]

Remark: